Departamento de Química Inorgánica, Universidad de Alcalá, 28871 Alcalá de Henares-Madrid, Spain.
Inorg Chem. 2013 Jan 18;52(2):918-30. doi: 10.1021/ic302113k. Epub 2012 Dec 26.
Copper(I) and silver(I) ionic compounds [(L)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)] containing [MTi(3)N(4)] cube-type cations have been prepared by reaction of [(CF(3)SO(2)O)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}] (M = Cu (2), Ag (3)) with a variety of donor molecules L. Treatment of complexes 2 and 3 with NH(3) in toluene at room temperature gives the ammonia adducts [(H(3)N)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)] (M = Cu (4), Ag (5)), whose X-ray crystal structures reveal two cube-type cations associated through hydrogen bonding interactions between the ammine ligands and one oxygen atom of each trifluoromethanesulfonate anion. Analogous treatment of 2 and 3 with 1 equiv of pyridine, 2,6-dimethylphenylisocyanide, tert-butylisocyanide, or triphenylphosphane gives the ionic compounds [(L)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)] (L = py, M = Cu (6), Ag (7); L = CNAr, M = Cu (8), Ag (9); L = CNtBu, M = Cu (10), Ag (11); L = PPh(3), M = Cu (12), Ag (13)). The reactions of 2 and 3 with methylenebis(diphenylphosphane) (dppm) in a 1:1 ratio lead to the single-cube complexes [(dppm)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)] (M = Cu (14), Ag (15)), whereas in a 2:1 ratio give the bisphosphane-bridged double-cube compounds [{M(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}(2)(μ-dppm)]O(3)SCF(3) (M = Cu (16), Ag (17)). Similarly, treatment of 2 or 3 with a half equivalent of ethane-1,2-diylbis(diphenylphosphane) (dppe) affords double-cube derivatives [{M(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}(2)(μ-dppe)]O(3)SCF(3) (M = Cu (18), Ag (19)). The X-ray crystal structures of 4, 5, 10, 14, 15, and 18 have been determined.
含有 [MTi(3)N(4)] 立方型阳离子的铜 (I) 和银 (I) 离子化合物 [(L)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)] 是通过 [(CF(3)SO(2)O)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}](M = Cu(2),Ag(3))与各种给体分子 L 反应制备的。将配合物 2 和 3 与氨在室温下在甲苯中处理得到氨加合物 [(H(3)N)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)](M = Cu(4),Ag(5)),其 X 射线晶体结构显示两个立方型阳离子通过氨配体和每个三氟甲磺酸阴离子的一个氧原子之间的氢键相互作用关联。类似地,用 1 当量的吡啶、2,6-二甲基苯基异氰化物、叔丁基异氰化物或三苯基膦处理 2 和 3 得到离子化合物 [(L)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)](L = py,M = Cu(6),Ag(7);L = CNAr,M = Cu(8),Ag(9);L = CNtBu,M = Cu(10),Ag(11);L = PPh(3),M = Cu(12),Ag(13))。2 和 3 与亚甲基双(二苯基膦)(dppm)以 1:1 的比例反应得到单核立方配合物 [(dppm)M{(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}][O(3)SCF(3)](M = Cu(14),Ag(15)),而以 2:1 的比例得到双核桥联双立方化合物 [{M(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}(2)(μ-dppm)]O(3)SCF(3)(M = Cu(16),Ag(17))。同样,用乙烷-1,2-二基双(二苯基膦)(dppe)的一半当量处理 2 或 3 得到双核衍生物 [{M(μ(3)-NH)(3)Ti(3)(η(5)-C(5)Me(5))(3)(μ(3)-N)}(2)(μ-dppe)]O(3)SCF(3)(M = Cu(18),Ag(19))。4、5、10、14、15 和 18 的 X 射线晶体结构已确定。